The AR-12MW is a mechanical interlock unit accessory for mini contactors manufactured by Carlo Gavazzi. It consists of mechanical interlock components and cable kits for both line and load sides, enabling secure interconnection between contactors and auxiliary contact blocks. The unit features solder pin terminals that allow modification of the connection type from the standard screw clamp configuration to a solder pin interface, providing flexibility in installation methods. This accessory is compatible with contactors and auxiliary contact blocks in DC control applications, offering a reliable solution for applications requiring mechanical interlocking and standardized terminal connections.